Sectional shears for metal bars.



W. J. BRADLEY.

SEGTIONAL. SHEARS FOR. METAL BARS.

APPLICATION FILED APR. 12, 1913.-

1 1 08,689. Patented Aug. 25, 1914;

3 SHBETSSHBET 1.

Q 0 0 Swuawtoz W. J. BRADLEY.

SEOTIONAL SHBARS FOR METAL BARS.

APPLICATION FILED APR.12, 1913.

1,108,689. Patented 25,1914.

3 s -SHEET 2.

G C) G 3mm Wt Ill/i am J Bracllag yz/ /wwm 5% W attozuuz W. J. BRADLEY.

SEGTIONAL SHEARS FOR METAL BARS.

APPLIGATION FILED APR.12, 1913.

1, 1 08,689. Patented Aug. 25, 1914.

3 SHEETS-SHEET 3.

C) G C) Q C) C) JBrad/ ay THE NORRIS PETERS CO. PHOTO-LITHOU lVASHINGTONv D. C,

UNITED STATES PATENT orision.

WILLIAM J. BRADLEY, or TROY, NEW roan, ASSIGNOR oon-ronarroiv or NEW YORK.

or NEW YORK, 1v. Y., A

To run earn JOIiv'r ooiaranv SECTIONAL SHEARS FOP, lZETAL BAR-S.

Specification of Letters'latent.

Fatented Aug- 25, 1914.

Application filed April 12,1913. Serial No. 760,633.

To all whom it may concern:

Be it known that I, WILLIAM J. BRADLEY, a citizen of theUnited States, residing at Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Sectional Shears for Metal Bars, of which the following is a specification.

This invention relates to thesubject of shearing devices for cutting into predetermined lengths, bars of metal of various cross sectional. shapes, and more particularly refers to shears adapted for cutting rolled rail joint bars into joint lengths.

To this end, the invention primarily has in view the novel feature of constructing the upper and lower knife members of more than one matching blade section, each of which is separately removable and replaceable and is adaptable to various combinations with other blade sections according to the cross sectional characteristics Ofthe particular bar to be sheared. In this aspect, the invention possesses special utility in its application to shears for shearing rail joint bars of the continuous type, which type of rail joint bar includes an angle splice member adapted to fit the fishing spaces of the rails and an integral continuous base plate constituting a rail seat and support.

According to the usual practice of shearing rail joint bars, the shears employed for that purpose have been provided with single one-piece knife blades for both the upper knife member and for the lower knife member, for each particular section of rail joint. Hence, in the event of the breakage of a part of one of these knife blades, an entirely new blade must be substituted therefor, and furthermore it is necessary for themill to be provided with a complete set of the Onepiece knife blades for each particular section of rail joint bar, and since there must also be duplicates of all knife blades in Order that breakages may be immediately replaced, it is apparent that a large stock of knives or knife blades must be kept up to supply the demands of the ordinary shears usually employed for shearing rail joint bars to lengths.

It is, therefore, the purpose of the present invention to obviate these conditions incident to the use of the Ordinary shears by l'n-oviding sectional knife members, each section of which is separately and independently removable and replaceable. This sectional construction of knife possesses special. practical advantages from a manufacturing standpoint, in the shearing of rail joint bars particularly of the continuous design. One of these advantages arises from the fact that in the event of breakage of one portion of the knife, that blade section containing the break is the only part to be replaced and it can be done at a comparatively small expense. Another distinct advantage is that (here two sections of rail joint bars are alike in some portions, the knife blade section conforming to those portions, can be used on both joint bars, thus involving the feature of each blade section being adaptable to different combinations with other blade sections according to the similarity or dissimila ity of the cross sectional character istic of different sections Of rail joint bars. In connection with this phase of the inven tion, it is to be observed that the same pro- .ides means whereby a less number of knife blades are required to be kept in stock than under the prevailing practice with the ordinary shears, as already alluded to.

While the invention is necessarily susceptible of structural modification in various minor particulars without departing from the spirit or scope of the same, a preferred and practical embodiment thereof is shown in the accompanying drawings, in which- Figures 1 to d are similar elevational views illustrative of the sectional shear knife-members adapted for cutting four different types or sections of continuous rail joint bars. Fig. 5 is an elevational view showing a modification of the invention wherein the lower knife member may include a separate renewable tongue piece to lacilitate replacing of this part only of lower knife member or blade.

Like reference characters designate corre sponding parts in the several figures of the drawings.

i ccording to the present invention, the distinctive feature thereof resides in constructing the upper and lower shear knife members in sections, so for illustrative purposes there are shown in the drawings only the sectional shear knife members essential to this invention, which may be mounted in the shearing machine in any suitable man ner. In Figs. 1, 3, 4, and 5, the sectional of the separate blade sections 3 and 4t, and

the lower knife member consists of the sep arate blade sections 5 and (l, which are paired in matching contiguous relation so as to perform the same functions of a onepiece knife blade, while at the same time maintaining the vsectional or divided char acteristics whereby each blade section is ca pable of being separately removed and is replaced without disturbing any other blade section. This enables any oncof the sev eral blade'sections to be replaced by a similar duplicate section in the event of breakage of any portion thereof, and likewise permits the carrying out of that desirable function wherein a knife blade section that conforms to like parts of two or more different sections of rail joint bars can be used as a part of the shears for shearing the said different sections of rail joint bars.

The matching paired. blade sections and 4; Whichconstitute the upper knife member are respectively provided with adjoining and matching cutting edges '7 and 8 which together conform to the configuration and dimensions of one side or face of the metal bar to he cut, while the blade s ctions 5 and (3 of the lower knife member are likewise respectively provided with adjoining and matching cutting edges J and 1.0 which together conform to the configuration and dimensions of the opposite side or face of the bar.

I In the exemplification,shown in the drawings, the various bar sections illustrated are different sections of the continuous type of rail ]O1I1l) bar, and accordingly the'cuttmg edges 78 of the upper knife n'iember con form to the outer side or face of the bar,

while the cutting edges 9-10 of the lower knife member conform to the inner side or faceof the bar or vice versa, and it will also be apparent by reference to the various figures of the drawings how'any one of. the blade 'SGCUODS may be adapted for cutting different sections of the bar which present smnlar portions for the said sect on to operate upon.

The manner of mounting the separat blade sections is non-essential and it-will also be understood that the terms upper and lower are employed in the, relative sense only, it being obviously quite immaterial whether the shear members be arranged one over the other for vertical shearing or one at the side of the other for horizontal shearing, or which of the shear members is the movable one. v I

By way of illustrating the modification that 1111a he resorted .to in carrying out the invention thereis shown in Fig. 5 of the drawings a construction wherein the lower knife member includes as apart of one of the blad sections a separately detachable and renewable tongue piece 5; This tongue piece is the part which breaks frequently in shears for cutting rolled rail joint bars into joint lengths, andby making this sectiou'of the shear blade comparatively small, and separately detachable and renewable. it can be renewed atlesscost and less trouble than by replacing theentire blade section thus materiallycontri ti g 0 t e tical advantages of a shear forcmetal having knife members consisting of bars separately attachable and detachable blade sections.

1. claim:

1. A sectional shear for metal bars, each knife member of which consists of a pluralityof-separately attachable and detachable blade sections having irregular adjoirr ing cutting edges, the combined cutting edges of the two sectional knife members respectively conforming to the outside and inside configurations of the metal bar.

2. A sectionalv shear for metal bars, each knife member of which consists of, a pluiali'y of separately attachable and detach le blade sections,the blade sections of one iember having edges arranged to form a reentrant space, and one of the blade sections of the other knife member having a tongue piece adapted to operate within said space.

3. A sectional shear for metal includi l; 'fe member having cutting edges and a .ntrant space, and another knife member having a separately detachable, and renewable tongue piece cooperating with said space. l v

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

WILLIAM J. BRADLEY. [n at] /Vitnesses FREDERICK S. Corn, H. P. THOMPSON.

Copies of this patcnt may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

most 

